blender/io_mspgl/export_material.py

   1 import os
   2
   3 def create_technique_resource(material, resources):
   4         from .datafile import Resource, Statement, Token
   5         tech_res = Resource(material.name+".tech", "technique")
   6
   7         mat_res = resources[material.name+".mat"]
   8
   9         if material.render_mode=='CUSTOM':
  10                 for m in material.render_methods:
  11                         st = Statement("method", m.tag)
  12                         if mat_res and m.use_material:
  13                                 st.sub.append(tech_res.create_reference_statement("material", mat_res))
  14
  15                         shader = m.shader
  16                         if shader.endswith(".glsl"):
  17                                 shader += ".shader"
  18                         st.sub.append(Statement("shader", shader))
  19
  20                         if material.uniforms:
  21                                 ss = Statement("uniforms")
  22                                 for u in material.uniforms:
  23                                         ss.sub.append(Statement("uniform", u.name, *u.values[:u.size]))
  24                                 st.sub.append(ss)
  25
  26                         tech_res.statements.append(st)
  27         else:
  28                 base_method = "blended" if material.blended else ""
  29                 st = Statement("method", base_method)
  30                 if mat_res:
  31                         st.sub.append(tech_res.create_embed_statement("material", mat_res))
  32
  33                 if material.blended:
  34                         ss.sub.append(Statement("blend", Token("SRC_ALPHA"), Token("ONE_MINUS_SRC_ALPHA")))
  35                 if material.receive_shadows:
  36                         st.sub.append(Statement("receive_shadows", True))
  37                 if material.image_based_lighting:
  38                         st.sub.append(Statement("image_based_lighting", True))
  39
  40                 tech_res.statements.append(st)
  41
  42                 if material.cast_shadows:
  43                         st = Statement("method", "shadow")
  44                         st.sub.append(Statement("shader", "occluder.glsl.shader"))
  45                         tech_res.statements.append(st)
  46
  47                         st = Statement("method", "shadow_thsm")
  48                         st.sub.append(Statement("shader", "occluder_thsm.glsl.shader"))
  49                         tech_res.statements.append(st)
  50
  51         return tech_res
  52
  53 class MaterialExporter:
  54         def export_technique_resources(self, material, resources):
  55                 from .export_texture import SamplerExporter, TextureExporter
  56                 texture_export = TextureExporter()
  57                 sampler_export = SamplerExporter()
  58
  59                 from .material import Material
  60                 if type(material)!=Material:
  61                         material = Material(material)
  62
  63                 for p in material.properties:
  64                         if p.texture:
  65                                 tex_name = p.texture.image.name+".tex2d"
  66                                 if tex_name not in resources:
  67                                         resources[tex_name] = texture_export.export_texture(p.texture, p.tex_usage, invert_green=p.invert_green)
  68
  69                                 samp_name = sampler_export.get_sampler_name(p.texture)
  70                                 if samp_name not in resources:
  71                                         resources[samp_name] = sampler_export.export_sampler(p.texture)
  72
  73                 mat_name = material.name+".mat"
  74                 if mat_name not in resources:
  75                         if material.type:
  76                                 resources[mat_name] = self.export_material(material, resources)
  77                         else:
  78                                 resources[mat_name] = None
  79
  80         def export_technique(self, material, resources):
  81                 from .material import Material
  82                 if type(material)!=Material:
  83                         material = Material(material)
  84
  85                 return create_technique_resource(material, resources)
  86
  87         def export_material(self, material, resources):
  88                 from .datafile import Resource, Statement, Token
  89                 mat_res = Resource(material.name+".mat", "material")
  90
  91                 if material.type!="pbr" and material.type!="unlit":
  92                         raise Exception("Can't export material {} of unknown type {}".format(material.name, material.type))
  93
  94                 mat_res.statements.append(Statement("type", Token(material.type)));
  95                 for p in material.properties:
  96                         st = self.create_property_statement(mat_res, p, resources)
  97                         if st:
  98                                 mat_res.statements.append(st)
  99                 textures = [p.texture for p in material.properties if p.texture]
 100                 if textures:
 101                         from .export_texture import SamplerExporter
 102                         sampler_export = SamplerExporter()
 103                         mat_res.statements.append(mat_res.create_reference_statement("sampler", resources[sampler_export.get_sampler_name(textures[0])]))
 104
 105                 return mat_res
 106
 107         def create_property_statement(self, mat_res, prop, resources):
 108                 from .datafile import Statement
 109                 if prop.texture:
 110                         tex_res = resources[prop.texture.image.name+".tex2d"]
 111                         from .util import basename
 112                         return mat_res.create_reference_statement(prop.tex_keyword, tex_res)
 113                 elif not prop.keyword:
 114                         return
 115                 elif type(prop.value)==tuple:
 116                         return Statement(prop.keyword, *prop.value)
 117                 else:
 118                         return Statement(prop.keyword, prop.value)
 119
 120
 121 class MaterialAtlasExporter:
 122         def __init__(self):
 123                 pass
 124
 125         def export_technique_resources(self, material_atlas, resources):
 126                 from .datafile import Resource, Statement, Token
 127                 base_color_name = material_atlas.name+"_base_color.tex2d"
 128                 base_color_res = resources.get(base_color_name)
 129                 if not base_color_res:
 130                         base_color_res = Resource(base_color_name, "texture2d")
 131
 132                         base_color_res.statements.append(Statement("storage", Token('SRGB_ALPHA'), *material_atlas.size))
 133                         base_color_res.statements.append(Statement("raw_data", material_atlas.base_color_data))
 134
 135                         resources[base_color_name] = base_color_res
 136
 137                 sampler_name = "nearest.samp"
 138                 sampler_res = resources.get(sampler_name)
 139                 if not sampler_res:
 140                         sampler_res = Resource(sampler_name, "sampler")
 141
 142                         sampler_res.statements.append(Statement("filter", Token('NEAREST')))
 143
 144                         resources[sampler_name] = sampler_res
 145
 146                 mat_name = material_atlas.name+".mat"
 147                 if mat_name not in resources:
 148                         mat_res = Resource(mat_name, "material")
 149                         mat_res.statements.append(Statement("type", Token('pbr')))
 150                         mat_res.statements.append(mat_res.create_reference_statement("base_color_map", base_color_res))
 151                         mat_res.statements.append(mat_res.create_reference_statement("sampler", sampler_res))
 152
 153                         resources[mat_name] = mat_res
 154
 155         def export_technique(self, material_atlas, resources):
 156                 return create_technique_resource(material_atlas, resources)